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Magnesium chloride hexahydrate Molecular biology grade

氯化镁六水合物分子生物学级

公司名称: AppliChem
产品编号: A4425
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Generation of IgG-Fc Glycovariants Using Recombinant Glycosidases and Glycosyltransferases
Author:
Date:
2016-08-05
[Abstract]  The immunoglobulin G (IgG) fragment crystallizable (Fc) domain contains a single, highly conserved asparagine 297 (N297) glycosylation site in the CH2 domain, which is buried within the hydrophobic core of each of the two heavy chains. The biantennary core glycan structure, composed of 2 N-acetylglucosamine (GlcNAc) and 3 mannose residues, can be further decorated with fucose, bisecting GlcNAc and terminal GlcNAc, galactose, and sialic acid. Presence or absence of distinct residues can alter IgG effector functions such as antibody-dependent cell-mediated cytotoxicity (ADCC) or ... [摘要]  免疫球蛋白G(IgG)片段可结晶(Fc)结构域在CH2结构域中包含单个,高度保守的天冬酰胺297(N297)糖基化位点,其掩埋在两条重链的每一条的疏水核内。由2个N-乙酰葡萄糖胺(GlcNAc)和3个甘露糖残基组成的双触角核心聚糖结构可以进一步用岩藻糖,二等分GlcNAc和末端GlcNAc,半乳糖和唾液酸装饰。不同残基的存在或不存在可以改变IgG效应子功能,例如抗体依赖性细胞介导的细胞毒性(ADCC)或补体依赖性细胞毒性(CDC)。在这里,我们提供使用重组糖苷酶和糖基转移酶产生IgG-Fc去半乳糖基化,半乳糖基化,去唾液酸化和唾液酸化IgG抗体的方案。

[背景] 糖基转移酶用于抗体聚糖修饰的用途允许将糖底物连接到预先存在的聚糖残基上。免疫球蛋白G在其每个CH2结构域中携带单个高度保守的N-糖基化位点(Arnold等人,2007)(图1),允许用糖基转移酶进行位点特异性聚糖修饰。如果抗体的Fab结构域含有Asn-X-Ser/Thr(X≠Pro)序列(Mellquist等人,1998),则抗体可携带额外的N-聚糖。因此,仔细选择缺少Fab糖基化的单克隆抗体对于Fc特异性聚糖修饰是重要的。本文所述的方案是基于以下出版物开发的(Kingston,2003; Kaneko等人,2006; Anthony等人,2008; Barb等人。,2009; Quast ...

The Application of Quercetin to Study the Effect of Hsp70 Silencing on Plant Virus Infection in Nicotiana benthamiana Plants
Author:
Date:
2015-12-05
[Abstract]  Pepino mosaic virus (PepMV) is a mechanically-transmitted pathogen affecting tomato plants worldwide. Like with other plant viruses (Verchot, 2012), the heat shock cognate protein 70 homolog (Hsc70) was identified as an interactor of the PepMV coat protein (CP) (Mathioudakis et al., 2012). Here, we describe a pharmacological approach to silence Hsp70 in plants using quercetin (Mathioudakis et al., 2014), an Hsp70 protein expression flavonoid inhibitor (Hosokawa et al., 1990; Manwell and Heikkila 2007). In the case of Hsp70, this methodology ... [摘要]  Pepino花叶病毒( PepMV )是一种机械传播的病原体,影响全世界的番茄植株。与其他植物病毒一样(Verchot,2012),热休克同源蛋白70同源物(Hsc70)被鉴定为PepMV外壳蛋白(CP)的相互作用物(Mathioudakis等人,2012)。在这里,我们描述了使用槲皮素使沉默Hsp70在植物中的药理学方法(Mathioudakis等人,2014),Hsp70蛋白质表达类黄酮抑制剂(Hosokawa等人,1990 ; Manwell和Heikkila 2007)。在Hsp70的情况下,该方法表示比通过反向遗传学测定(例如VIGS方法)沉默Hsp70更快和更容易的方法。使用注射器用槲皮素(溶解于DMSO中)或DMSO(对照植物)浸润2至3周龄的烟草烟草的完全膨胀的叶子。用PepMV病毒接种物机械接种植物。在接种后4天通过免疫印迹分析在局部叶子上分析Hsp70和PepMV的积累。

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